Metal-shank button.



H. L. DAVIS.

METAL SHANK BUTTON.

APPLICATION FILED SEPT. 17, 1908.

1,072,921 Patented Sept. 9, 1913.

[U ITED sTATE 1 HENRY LEWIS DAVIS or LONDON, ENGLAND.

v METAL-s ANKrU'r'ron.

To all who m, 2'25 may concern: I

Be it known that I, I'IENRY LEWIS Davis, a subject of the King of England, residing at London, England, have invented certain new and useful Improvements in Metal- Shank Buttons, of which the followingis a specification.

This inventionrelates to metal shank buttons and has for its object improvements in the,

thread holes or openingsin the shank while the button is being attached tolthe article to which it is to-be applied.-

For attaining the objects above set forth, the present invention consists essentially in providing the back diskor shell with an improved form of 'shank, as hereinafter described, which may eitherbe integral with said back or shell,-or connected therewith in such a manner as to permit the button to revolve around the shank.

understood I will now proceed to more of button adapted to turn about a shank made inaccordance with this invention, 'while Figs. 7, 8 and 9 are examples of'fancy buttons which may be provided with my implain type of button shown in Figs' 1 (0.3.

to 3, I press or otherwise form out of a sheet of metal or other suitable material, two disks or shells, from which the button-front a and Specification of Letters Patent.

construction of the shank thereof where-I by any possibility of the attaching thread In order that the invention may be clearly par- Fig. 6 is a sectional view of a. modified form I proved shank in the same'manner as the ratenma'se ac, 19113.

Application fileilSeptember 17,1908. Se1"ia1No.453,546. p

the buttonback b are respectively formed. As is usual and well-known in button ,making, the front shell a is made slightly larger than the back shell bso that a rim 0 on the latter can fit Within a rim d on the .former, and permit the two shells to be connected by swaging or ressing the outer rim d of the front part which'may or may not be provided witha cloth or other covering 6) over the inner rim 0 (Fig. 3 known in button makin I The shank of the button, the improved construction of which (shank) is. the subject of the present invention,-is, in the example of button now being veniently formed at the same time as the back shell is stamped out, the stamping tool being adapted to press up the central part of the back shell I) to form a projecting part f having a substantially flat circular top 9 joined to the shell I) by a preferably sloping wall hwhich, when the thread holes or openings are formed therein, constitutes a metal, shank of, what may be described as turretshape or substantially so, as distinguished from the known. dome-shank buttons.

the thread holes "or openings 2', (whereof thereare preferably four arranged in pairs; diametrically opposite each other, as shown) are formed, not by merely pier shank,'nor by whollyremoving portions of the wall It of -the shank-either of which methods fails to provide .non-cutting'edges for the holding threadbut, by partly severing the material at appropriate places around the wall Za' leaving each sop-artly severed piece j ,connected to the shank at the part around whioh the button holding thread is sewn. These partly severed pieces j are then turned over (either by the" punches, or in a second operation) against the inner side of the shank top, .so as to form smooth curved edges by which the sewing thread is not liable to be out: When the partly severed portions are turned in, these. may be channeled orroundcd at the parts engaged by 'the threads, (as is shown in Fig. 6), which are thereby caused .to arrange themselves centrally with relation to the width of the openings, inisewing the button to a garn'ient, or other'article.

. By means of my' said invention greater room can be provided between the shank and the ed described, con- By means of suitably constructed punches,

cing the ge of the button than is possible with the; known domed-metal-shank button.

Moreover there is no possibility of the attaching thread being out by contact with sharp or jagged edges, and there is a substantially fiat surface contact between the shank top and the material, and the insertion of the needle through the openings is greatly facilitated, as the substantially flat shank top forms a guide for said needle.

Buttons having shanks made according to this invention may of course be covered with various materials or provided with fancy centers or rims as shown in Figs. 7 to 9 or with other ornamentations as is now done in the case of other well-known kinds of buttons.

Fig. 6 illustrates an example of a button which can revolve around its shank. In this case the shank f, is formed from a shell 70 which is placed between the front and back shells a and b forming the button, and projects through an opening in the back shell so as to permit the button to turn about its shank f.

I claim A button having a hollow metal shank in which thread holes are formed by turning inwardly the metal cut away from the shank wall at the widest portion of such holes, so as to form a protecting edge extending the I full width of the hole at that part adapted to be engaged by the button securing thread, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY LEl/VIS DAVIS.

Witnesses MARY RIscoN, HERBERT VVILLIAM 'WAINWRIGHT. 

